mysql materialized view

(1) For the configuration file path, sometimes I find that although I tried to modify some variables in the configuration file, they did not take effect. It was later discovered that the modified file was not the configuration file read by the MySQL server. If you do not know the path of the configuration file currently used by MySQL, you can view it as follows:

To be a qualified programmer, in addition to writing beautiful code, it is also indispensable to be familiar with the database. The following summarizes how to view and modify the MySQL database table storage engine: to be a qualified programmer, in addition to writing beautiful code, it is also indispensable to be familiar with the database. The following summarizes how to

Two ways for MySQL to view the current running status: bitsCN.com Method 1: Use the mysql command to view In MySQL, you can view common system information directly by checking the status, as shown in the following example:

MySQL transaction, view, index, database backup, recovery, mysql Database Backup Create database 'mybank ';/* Create a table */USE mybank;Create table 'bank '('Mermername' CHAR (10), # User Name'Currentmoney' DECIMAL (10, 2) # current balance);/* Insert data */Insert into 'bank' ('mermername', 'currentmoney') VALUES ('zhang san', 1000 );Insert into 'bank' ('merme

Reprinted: mysql status view QPSTPS cache hit rate view Reprinted: http://blog.163.com/ji_1006/blog/static/106123412013101421530142/ View the running mysql status Monitor running mysql. one of the following methods is to

How to View mysql connection parameters bitsCN.com How to View mysql connection parameters 1. view the details of all current connections: ./Mysqladmin-uadmin-p-h10.140.1.1 processlist 2. view only the current number of

View the mysql execution plan bitsCN.com View the execution plan of mysql. the SQL statement is executed for 4 minutes, and the message_message contains 1000 million data. the execution plan of mysql is learned. Select * from message_message where id in (select message_id Fr

give a practical example: CREATE TABLE User_info (user_id int NOT NULL, user_name varchar () is not null); INSERT into User_info values (1, ' AA '), (2, ' BB ') ...//Suppose we insert 10,000 data messages ... Then we want to query the data information of id>5000 and id The final result will output the data in the ID 5000-8000, and will also output the query time information .... 2. View Views are divided into normal and

Original works of Lin Bingwen Evankaka. Reprinted please indicate the source http: blogcsdnnetevankaka Abstract: This article focuses on the definition, principle, and usage, creation, and deletion of visual charts in MySql. 1. View overview A view is a virtual table whose content is defined by the query. Like a real table, a

Enable mysql slow query log and run mysqldumpslow to view mysqldump BitsCN.com Enable mysql slow query logs and run the mysqldumpslow command to view the logs. The mysql server has a function to detect which SQL statement query is slow, that is, slow query slowlog. now we